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Parametric Study of HEMP-Thruster Downscaling to μN Thrust Levels

Keller, Andreas and Köhler, Peter and Hey, Franz Georg and Berger, Marcel and Braxmaier, Claus and Feili, Davar and Weise, Dennis and Johann, Ulrich (2015) Parametric Study of HEMP-Thruster Downscaling to μN Thrust Levels. IEEE Transactions on Plasma Science, 43 (1), pp. 45-53. IEEE - Institute of Electrical and Electronics Engineers. DOI: 10.1109/TPS.2014.2321095 ISSN 0093-3813

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Abstract

Many on-going European Space Agency (ESA) science and earth observation missions are based on precision attitude control and formation flying. All these missions impose strong requirements on propulsion system which should provide low thrust, low noise, and high-precision thrust vectors in up to 16 directions. Also as most of these missions have a platform with limited solar cell arrays, the power consumption of the propulsion system should be as low as possible. The idea of using a small high-efficiency multistage plasma thruster (HEMPT) system for such missions is very attractive because of its relatively low complexity and low system mass. Thus, the ability of downscaling a HEMPT to the μN range is investigated experimentally. A measurement campaign studying systematically the influence of the geometrical dimensions of main thruster parameters on operation, beam profile, and ion acceleration is presented. Additionally the anode material was varied and showed relevance to ion acceleration distribution. The minimum achieved thrust was 50 μN at an anode voltage of 600 V, corresponding to a specific impulse of 230 s. Operation points with thrusts of 180 and 360 μN demonstrate a specific impulse of 610 and 860 s, respectively.

Item URL in elib:https://elib.dlr.de/103534/
Document Type:Article
Title:Parametric Study of HEMP-Thruster Downscaling to μN Thrust Levels
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Keller, AndreasAstrium GmbH, Claude-Dornierstra�e 1, 88090 Immenstaad, GermanyUNSPECIFIED
Köhler, PeterUniversität GießenUNSPECIFIED
Hey, Franz Georgfranz.hey (at) airbus.comUNSPECIFIED
Berger, MarcelAirbus Defence and SpaceUNSPECIFIED
Braxmaier, Clausclaus.braxmaier (at) dlr.deUNSPECIFIED
Feili, DavarUniverisity of SouthamptonUNSPECIFIED
Weise, DennisAstrium GmbH–Satellites, 88039 Friedrichshafen, GermanyUNSPECIFIED
Johann, UlrichAstrium FriedrichshafenUNSPECIFIED
Date:January 2015
Journal or Publication Title:IEEE Transactions on Plasma Science
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:43
DOI :10.1109/TPS.2014.2321095
Page Range:pp. 45-53
Publisher:IEEE - Institute of Electrical and Electronics Engineers
ISSN:0093-3813
Status:Published
Keywords:Electric propulsion, high-efficiency multistage plasma thruster (HEMPT), plasma devices, plasma diagnostics
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben GRACE Follow-On
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Systems Enabling Technologies
Deposited By: Hüls, Simone
Deposited On:31 Mar 2016 11:57
Last Modified:06 Sep 2019 15:21

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